Results from the BGS South Atlantic Observatories : Ascension Island and the Falkland Islands

Reay, Sarah; Turbitt, Christopher; Flower, Simon; Riddick, John; Clarke, Ellen. 2003 Results from the BGS South Atlantic Observatories : Ascension Island and the Falkland Islands. [Poster] In: XXIII IUGG General Assembly, Sapporo, Japan, 30 June- 11 July 2003. (Unpublished)

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Abstract/Summary

In the early 1990s the British Geological Survey (BGS) installed two magnetic observatories in remote locations: one on Ascension Island and one on the Falkland Islands. The aim of this was to improve the distribution of observatories worldwide with the view to providing data for global magnetic modelling. In order that these observatories meet current INTERMAGNET standards in sample rate, data retrieval and baseline stability, the original systems were replaced in 2002 with tri-axial fluxgate magnetometers and proton precession magnetometers. New data acquisition hardware, software and network communications were also installed. We introduce the observatories locations and instrumentation and show results obtained over the last decade. We examine the data quality and baseline stability of the two observatories, looking particularly at improvements to the results since upgrading the observatory systems. We discuss whether the results indicate that these two island observatories now meet the requirements for INTERMAGNET Magnetic Observatory (IMO) status.

Item Type:	Publication - Conference Item (Poster)
Programmes:	BGS Programmes > Seismology and Geomagnetism
NORA Subject Terms:	Earth Sciences
Date made live:	21 Nov 2012 13:10 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/20496

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